Because this is a system-level APK, you cannot install it like a normal app. You must use or a rooted file manager.
Version-specific notes for 5.1-1743759
The short answer:
: Keeping your contacts, calendar events, and emails updated across all devices. Google Account Manager 5.1-1743759 -Android 5.0
Google Account Manager 5.1-1743759 is specifically designed to work with Android 5.0 devices. This version of the app is optimized to take advantage of the new features and security enhancements in Android 5.0. Some of the benefits of using Google Account Manager 5.1-1743759 on Android 5.0 include: Because this is a system-level APK, you cannot